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- Omar80747326
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Automated systems
Would it be good if planes has got automated dive systems to recover from any stall
Re: Automated systems
What’s better is full flight envelope protection which has existed since the late 80s
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- Starlionblue
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Re: Automated systems
Omar80747326 wrote:Would it be good if planes has got automated dive systems to recover from any stall
As mentioned above, we have had such systems for decades, and they keep evolving. Protection systems today go well beyond just automated pitch decrease at an approach to stall. For example, it is (almost) impossible to get into a stall in the first place in an Airbus in Normal Law. Low-speed protection will kick in well before a stall, both with an AoA decrease and if that is not enough, with a thrust increase.
Have a read here for the Airbus flavour of protection: http://www.airbusdriver.net/airbus_fltlaws.htm. For the case in your specific question:
High Angle of Attack Protection (alpha):
When alpha exceeds alpha prot, elevator control switches to alpha protection mode in which angle of attack is proportional to sidestick deflection.
Alpha max will not be exceeded even if the pilot applies full aft deflection
Re: Automated systems
Omar80747326 wrote:Would it be good if planes has got automated dive systems to recover from any stall
Just curious? New poster I see. What has prompted this question and as you can see from the previous posts these kind of protection systems have been around for a couple of decades, with varying degrees of success.
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- Starlionblue
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Re: Automated systems
BravoOne wrote:Omar80747326 wrote:Would it be good if planes has got automated dive systems to recover from any stall
Just curious? New poster I see. What has prompted this question and as you can see from the previous posts these kind of protection systems have been around for a couple of decades, with varying degrees of success.
A determined pilot will manage to crash the safest airplane...
Re: Automated systems
The poster sounds like an attorney doing research for a pending case:)
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- Omar80747326
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Re: Automated systems
I mean if any pilot put such a plane into a steep climb, then its speed decreases and stalls or about to stall, during that the computers calculate how much altitude and speed is required to recover from the stall completely, and if the pilot did in few seconds nothing the computers will automatically force the plane to dive by pushing the yoke/stick violently making the aircraft enter an extreme nosedive of pitch angle at least of 40-60 degrees and a maximum of a near vertical/vertical 70-90 degrees, as the speed is 25-35% more than the normal cruise speed the autopilot disengages and the pilot will have to pull the yoke manually.
Re: Automated systems
Omar80747326 wrote:I mean if any pilot put such a plane into a steep climb, then its speed decreases and stalls or about to stall, during that the computers calculate how much altitude and speed is required to recover from the stall completely, and if the pilot did in few seconds nothing the computers will automatically force the plane to dive by pushing the yoke/stick violently making the aircraft enter an extreme nosedive of pitch angle at least of 40-60 degrees and a maximum of a near vertical/vertical 70-90 degrees, as the speed is 25-35% more than the normal cruise speed the autopilot disengages and the pilot will have to pull the yoke manually.
You have a fundamental misconception about what a stall is, and therefore how to recover from one. A stall is simply when the critical angle of attack is exceeded, it can happen in any attitude.
To recover from a stall the angle of attack just needs to be reduced below the critical angle of attack, the reduction in attitude only needs be a few degrees.
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- GalaxyFlyer
- Posts: 12400
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Re: Automated systems
While your parameters are off, that’s what a stick pusher does. Pushers, envelope protection, stall warning devices have been around for decades and haven’t prevented the incompetent, careless or confused from loss of control.
GF
GF
Re: Automated systems
BravoOne wrote:Omar80747326 wrote:Would it be good if planes has got automated dive systems to recover from any stall
Just curious? New poster I see. What has prompted this question and as you can see from the previous posts these kind of protection systems have been around for a couple of decades, with varying degrees of success.
Might be from the TV show Mayday that focused on Colgan 3407 which aired again this week on The Weather Channel?
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